Greatest Common Factor of 28, 42, 71, 124

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 28, 42, 71, 124 by common division method
• Greatest Common Factor of 28, 42, 71, 124 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 71

List of positive integer factors of 71 that divides 71 without a remainder.

1,71

Factors of 124

List of positive integer factors of 124 that divides 124 without a remainder.

1,2,4,31,62,124

Greatest Common Factor

We found the factors 28,42,71,124 . The biggest common factor number is the GCF number.
So the greatest common factor 28,42,71,124 is 1.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 78, 60, 74, 413
• GCF of 96, 61, 91, 957
• GCF of 84, 86, 76, 459
• GCF of 25, 18, 30, 936
• GCF of 90, 34, 69, 703

1. What is the GCF of 28, 42, 71, 124?

Answer: GCF of 28, 42, 71, 124 is 1.

2. How to Find the GCF of 28, 42, 71, 124

Answer: Greatest Common Factor(GCF) of 28, 42, 71, 124 = 1

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(28, 42, 71, 124) = 1.